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// Build don't link:
template <class InputIterator, class BinaryOperation>
void accumulate(InputIterator first,
BinaryOperation binary_op) {
}
template<class R> int p( int val, R& r )
{
return val + r;
}
template<class R> void f(R)
{
accumulate(0, static_cast<int (*)(int, R&)>(p) );
}
main()
{
f(0);
}
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